Hey guys i may have the opportunity to get a cal 30 for free. But it is missing engine, sails, mast and boom ...

I would say you could pick these up used for about $10-15K, new equipment would be about twice that much. The best and quickest way to get these used parts as a bundle is to buy a decent Cal 30 that has a working engine, full rig, and sails, for about $10-15K. After paying for it, you can immediately go sailing...A hull without so many essential and expensive parts is worth only the negative value of the cost of cutting it up.